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by Keyreaper
January 5th, 2009, 8:44 pm
Forum: 2009 Build Events
Topic: Elevated Bridge B/C
Replies: 1754
Views: 148870

Re: Elevated Bridge 2009

Okay so I have two sides of these. But I don't know how to correctly make them stand up, so i can glue the lateral bracing. I was thinking of getting a block about 50 cm long and maybe 4-3 cm high and 5 cm wide... and just clamp both sides so that they are lined up.... But I'm afraid this will bend ...
by Keyreaper
January 5th, 2009, 8:34 pm
Forum: 2009 Build Events
Topic: Elevated Bridge B/C
Replies: 1754
Views: 148870

Re: Elevated Bridge 2009

In my opinion. Instead of having the the legs like pillars. You should have them slanted... I think this because, One when slanted the middle section (where you load the loading block & the place above the clearance block) is definitely shorter, saving weight. And second, because they are at an angl...
by Keyreaper
January 3rd, 2009, 8:00 pm
Forum: 2009 Build Events
Topic: Elevated Bridge B/C
Replies: 1754
Views: 148870

Re: Elevated Bridge 2009

The glue I use is a wood glue called Titebond III... Requires clamping (I use pins) and a full 24 hours to "set" and "harden" Guys understand that this is a little different than the regular bridge building they did back ago. It is a little tougher. And that though hard work and failures, will come ...
by Keyreaper
January 3rd, 2009, 11:06 am
Forum: 2009 Build Events
Topic: Elevated Bridge B/C
Replies: 1754
Views: 148870

Re: Elevated Bridge 2009

Ugh... Almost done with my 3rd bridge... It looks good so far. And I will try to post it on by the end of today. Right now I'm letting the glue "set" and "harden". I do have to say. Trying to build 2 different bridges simultaneously is very difficult. But I'm working on my 4th bridge and it is an ar...
by Keyreaper
January 3rd, 2009, 10:16 am
Forum: 2009 Build Events
Topic: Elevated Bridge B/C
Replies: 1754
Views: 148870

Re: Elevated Bridge 2009

i used butt joints for the first bridge because i thought that using larger pieces of would would compensate for bad joint technique....i was wrong. So far, the highest efficiency I've seen was a 10 gram bridge holding all 15 kilos...(for those of you that can't do mental math, that equals efficien...
by Keyreaper
January 2nd, 2009, 11:33 pm
Forum: 2009 Build Events
Topic: Elevated Bridge B/C
Replies: 1754
Views: 148870

Re: Elevated Bridge 2009

So far, the highest efficiency I've seen was a 10 gram bridge holding all 15 kilos...(for those of you that can't do mental math, that equals efficiency of 1500) It was built by St.Joesph in MO I believe. The one trailing after that was a bridge that was around 14-16 grams, if i recall right, holdin...
by Keyreaper
January 2nd, 2009, 11:28 am
Forum: 2009 Build Events
Topic: Elevated Bridge B/C
Replies: 1754
Views: 148870

Re: Elevated Bridge 2009

Correct I do mean those kinds of gussets... preferably the second one where it is placed over the wood. And I think you are correct. The material should be breaking. Also. Have any of you considered half-lap joints??? Here's a link to an example. http://www.rabbitwoodworks.com/images/Joinery/corner-...
by Keyreaper
January 2nd, 2009, 10:45 am
Forum: 2009 Build Events
Topic: Elevated Bridge B/C
Replies: 1754
Views: 148870

Re: Elevated Bridge 2009

Hey I have finally gotten my balsa wood (sticks & sheets) and was wondering, if you are going to butt joints, what shape should the gusset plates be?? I was thinking square or triangle depending on angles. And if the gusset plate grain should go with or against the grain of the sticks. Thanks. *Edit...
by Keyreaper
October 27th, 2008, 7:46 pm
Forum: 2009 Build Events
Topic: Elevated Bridge B/C
Replies: 1754
Views: 148870

Re: Elevated Bridge 2009

How much does that bridge weigh? I built something pretty darn similar but total ending up being 30 grams...(used 1/4 balsa parts and it was poorly built.) http://photos-a.ak.facebook.com/photos-ak-sf2p/v356/160/102/1513803783/n1513803783_30062560_6521.jpg I know the wood it too thick but I have ne...
by Keyreaper
October 27th, 2008, 7:43 pm
Forum: 2009 Build Events
Topic: Elevated Bridge B/C
Replies: 1754
Views: 148870

Re: Elevated Bridge 2009

Thanks :D. I should have a new picture of what my new bridge would look like soon

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